WrittenBook.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\item;
 
use pocketmine\nbt\tag\CompoundTag;
use pocketmine\utils\Limits;
use pocketmine\utils\Utils;
use function sprintf;
use function strlen;
 
class WrittenBook extends WritableBookBase{
 
    public const GENERATION_ORIGINAL = 0;
    public const GENERATION_COPY = 1;
    public const GENERATION_COPY_OF_COPY = 2;
    public const GENERATION_TATTERED = 3;
 
    public const TAG_GENERATION = "generation"; //TAG_Int
    public const TAG_AUTHOR = "author"; //TAG_String
    public const TAG_TITLE = "title"; //TAG_String
 
    private int $generation = self::GENERATION_ORIGINAL;
    private string $author = "";
    private string $title = "";
 
    public function getMaxStackSize() : int{
        return 16;
    }
 
    public function getGeneration() : int{
        return $this->generation;
    }
 
    public function setGeneration(int $generation) : self{
        if($generation < 0 || $generation > 3){
            throw new \InvalidArgumentException("Generation \"$generation\" is out of range");
        }
 
        $this->generation = $generation;
        return $this;
    }
 
    public function getAuthor() : string{
        return $this->author;
    }
 
    public function setAuthor(string $authorName) : self{
        if(strlen($authorName) > Limits::INT16_MAX){
            throw new \InvalidArgumentException(sprintf("Author must be at most %d bytes, but have %d bytes", Limits::INT16_MAX, strlen($authorName)));
        }
        Utils::checkUTF8($authorName);
        $this->author = $authorName;
        return $this;
    }
 
    public function getTitle() : string{
        return $this->title;
    }
 
    public function setTitle(string $title) : self{
        if(strlen($title) > Limits::INT16_MAX){
            throw new \InvalidArgumentException(sprintf("Title must be at most %d bytes, but have %d bytes", Limits::INT16_MAX, strlen($title)));
        }
        Utils::checkUTF8($title);
        $this->title = $title;
        return $this;
    }
 
    protected function deserializeCompoundTag(CompoundTag $tag) : void{
        parent::deserializeCompoundTag($tag);
        $this->generation = $tag->getInt(self::TAG_GENERATION, $this->generation);
        $this->author = $tag->getString(self::TAG_AUTHOR, $this->author);
        $this->title = $tag->getString(self::TAG_TITLE, $this->title);
    }
 
    protected function serializeCompoundTag(CompoundTag $tag) : void{
        parent::serializeCompoundTag($tag);
        $tag->setInt(self::TAG_GENERATION, $this->generation);
        $tag->setString(self::TAG_AUTHOR, $this->author);
        $tag->setString(self::TAG_TITLE, $this->title);
    }
}